How are they going to get WoW users to migrate to anything new they produce? That's the problem with MMOs, players get too possessive about their progress...
There's an independent body in Australia called the ACCC - I don't think they're going to let a company dictate the terms of sale as specifically as MS are getting at here.
I bought the original Heroes VI game and it too is unfairly difficult. It is because you cannot develop troops without attacking, and you can't develop troops if you you're too weak to attack. It's a circular mechanism that is at odds with strategy. Also, the CPU manages to build up whatever and whenever it wants.
so_hai's comments